Made in USA. This Power Steering Adapter Kit fits various power steering box applications with 1/2-20 and 5/8-18 ports. These adapters include crush washers and Teflon o-ring seals to seal the adapter to the box. A machined or spot-faced surface approximately .120" wide is required around the opening of the ports to ensure a positive seal, Crush washers and Teflon o-rings can be removed for applications where the ports contain inverted flare cones. Steel adapters are coated with our proprietary Pure Stealth ceramic coating. While it is extremely durable, it is possible to scratch it. Care should be taken during installation to prevent damage.